.wrapper{
    width: 90%;
    max-width: 900px;
    margin: 0 auto;
}
.head{
    height: 120px;
    background: brown;
}
.head h1, .head ul{
    margin: 0;
    padding: 0;
}
.head h1{
    height: 80px;
}
.head li{
    list-style: none;
    float: left;
    width: 18%;

    height: 28px;
    text-align: center;
    border-bottom: 2px solid ;
}
.main{
    min-height: 100px;

}
.sidebar{
    width: 30%;
    background: yellow;
    height: 100px;
}
.content{
    background: hotpink;
    width: 70%;
    min-height:100px;
}
/* 左浮动 */
.fl{
    float: left;

}